Listening to radio 4

Question

Hi chaps, I think I know the answer but maybe ! ... I'm thinking about getting an iphone 4 - 2 questions please:
1) As it has no fm radio - out of range of wifi using the 3g connection will eat up data allowance ... is that correct ? and is there a way around.
2) If I am in a wifi situation and leave the radio on ALL night will I be abusing the battery (ie shortening it's life) ?
Many thanks for any advice.
Roger

Answer 1

The more often you charge the battery, the more full charge cycles will be used.
http://www.apple.com/batteries/
A charge cycle means using all of the battery’s power, but that doesn’t necessarily mean a single charge. For instance, you could listen to your iPod for a few hours one day, using half its power, and then recharge it fully. If you did the same thing the next day, it would count as one charge cycle, not two, so you may take several days to complete a cycle. Each time you complete a charge cycle, it diminishes battery capacity slightly, but you can put notebook, iPod, and iPhone batteries through many charge cycles before they will only hold 80% of original battery capacity. As with other rechargeable batteries, you may eventually need to replace your battery.
http://www.apple.com/batteries/iphone.html
A properly maintained iPhone battery is designed to retain up to 80% of its original capacity at 400 full charge and discharge cycles. You may choose to replace your battery when it no longer holds sufficient charge to meet your needs.
I wouldn't concern yourself with keeping track of how many full charge and discharge cycles you have gone through with your iPhone. Just enjoy it, but if you plan on streaming radio all night long with your iPhone while you are sleeping, probably a good idea to have your iPhone connected to a power source. In addition when your iPhone is connected to a power source when it is connected to an available wi-fi network, the wi-fi network will remain connected for your internet connection. When your iPhone goes to sleep when connected to an available wi-fi network when it is not connected to a power source, the wi-fi connection will be dropped to conserve battery. When waking the iPhone up, the wi-fi connection will be quickly re-established.